Missouri Route 90

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Route 90 marker

Route 90
Route information
Maintained by MoDOT
Length: 43 mi (69 km)
Existed: 1922 – present
Major junctions
West end: Route 43 north of Southwest City
East end: Route 37 – Washburn
Highway system
Route 89 Route 91

Route 90 is a highway in southwest Missouri. Its eastern terminus is at Route 37 in Washburn; its western terminus is at Route 43 northeast of Southwest City.

Route description[edit]

Route 90 is a two-lane highway for its entire length and is in rugged areas, very hilly and very curvy.

The highway begins at Missouri Route 43. When it reaches Missouri Route 59, it has a brief concurrency and the road passes under the bluffs. At Noel, the highway leaves the duplex and continues east. Halfway between the City of Noel and US 71 is a planned interchange with future I-49.[1] Further east, the highway intersects the current US 71. At Jane, Route 90 crosses an older alignment of U.S. Route 71. About fifteen miles (24 km) west of its terminus is an intersection with Route E, in which the primary highway (Route 90) stops for a secondary road (Route E), a very rare and possibly unique occurrence in the state. The route ends at Missouri State Route 37 in Washburn, MO.


Route 90 was one of the original 1922 state highways. Its eastern terminus was at Route 1 in Noel and its western terminus was at the corner of Missouri, Oklahoma, and Arkansas near Southwest City. It was eventually extended down Routes P and K to Washburn.